Subversion-Projekte lars-tiefland.laravel_shop

<?php

namespace Illuminate\Database;

use Doctrine\DBAL\Types\Type;

use Illuminate\Database\Connectors\ConnectionFactory;

use Illuminate\Support\Arr;

use Illuminate\Support\ConfigurationUrlParser;

use Illuminate\Support\Str;

use Illuminate\Support\Traits\Macroable;

use InvalidArgumentException;

use PDO;

use RuntimeException;

/**

 * @mixin \Illuminate\Database\Connection

 */

class DatabaseManager implements ConnectionResolverInterface

{

    use Macroable {

        __call as macroCall;

    }

    /**

     * The application instance.

     *

     * @var \Illuminate\Contracts\Foundation\Application

     */

    protected $app;

    /**

     * The database connection factory instance.

     *

     * @var \Illuminate\Database\Connectors\ConnectionFactory

     */

    protected $factory;

    /**

     * The active connection instances.

     *

     * @var array<string, \Illuminate\Database\Connection>

     */

    protected $connections = [];

    /**

     * The custom connection resolvers.

     *

     * @var array<string, callable>

     */

    protected $extensions = [];

    /**

     * The callback to be executed to reconnect to a database.

     *

     * @var callable

     */

    protected $reconnector;

    /**

     * The custom Doctrine column types.

     *

     * @var array<string, array>

     */

    protected $doctrineTypes = [];

    /**

     * Create a new database manager instance.

     *

     * @param  \Illuminate\Contracts\Foundation\Application  $app

     * @param  \Illuminate\Database\Connectors\ConnectionFactory  $factory

     * @return void

     */

    public function __construct($app, ConnectionFactory $factory)

    {

        $this->app = $app;

        $this->factory = $factory;

        $this->reconnector = function ($connection) {

            $this->reconnect($connection->getNameWithReadWriteType());

        };

    }

    /**

     * Get a database connection instance.

     *

     * @param  string|null  $name

     * @return \Illuminate\Database\Connection

     */

    public function connection($name = null)

    {

        [$database, $type] = $this->parseConnectionName($name);

        $name = $name ?: $database;

        // If we haven't created this connection, we'll create it based on the config

        // provided in the application. Once we've created the connections we will

        // set the "fetch mode" for PDO which determines the query return types.

        if (! isset($this->connections[$name])) {

            $this->connections[$name] = $this->configure(

                $this->makeConnection($database), $type

            );

        }

        return $this->connections[$name];

    }

    /**

     * Parse the connection into an array of the name and read / write type.

     *

     * @param  string  $name

     * @return array

     */

    protected function parseConnectionName($name)

    {

        $name = $name ?: $this->getDefaultConnection();

        return Str::endsWith($name, ['::read', '::write'])

                            ? explode('::', $name, 2) : [$name, null];

    }

    /**

     * Make the database connection instance.

     *

     * @param  string  $name

     * @return \Illuminate\Database\Connection

     */

    protected function makeConnection($name)

    {

        $config = $this->configuration($name);

        // First we will check by the connection name to see if an extension has been

        // registered specifically for that connection. If it has we will call the

        // Closure and pass it the config allowing it to resolve the connection.

        if (isset($this->extensions[$name])) {

            return call_user_func($this->extensions[$name], $config, $name);

        }

        // Next we will check to see if an extension has been registered for a driver

        // and will call the Closure if so, which allows us to have a more generic

        // resolver for the drivers themselves which applies to all connections.

        if (isset($this->extensions[$driver = $config['driver']])) {

            return call_user_func($this->extensions[$driver], $config, $name);

        }

        return $this->factory->make($config, $name);

    }

    /**

     * Get the configuration for a connection.

     *

     * @param  string  $name

     * @return array

     *

     * @throws \InvalidArgumentException

     */

    protected function configuration($name)

    {

        $name = $name ?: $this->getDefaultConnection();

        // To get the database connection configuration, we will just pull each of the

        // connection configurations and get the configurations for the given name.

        // If the configuration doesn't exist, we'll throw an exception and bail.

        $connections = $this->app['config']['database.connections'];

        if (is_null($config = Arr::get($connections, $name))) {

            throw new InvalidArgumentException("Database connection [{$name}] not configured.");

        }

        return (new ConfigurationUrlParser)

                    ->parseConfiguration($config);

    }

    /**

     * Prepare the database connection instance.

     *

     * @param  \Illuminate\Database\Connection  $connection

     * @param  string  $type

     * @return \Illuminate\Database\Connection

     */

    protected function configure(Connection $connection, $type)

    {

        $connection = $this->setPdoForType($connection, $type)->setReadWriteType($type);

        // First we'll set the fetch mode and a few other dependencies of the database

        // connection. This method basically just configures and prepares it to get

        // used by the application. Once we're finished we'll return it back out.

        if ($this->app->bound('events')) {

            $connection->setEventDispatcher($this->app['events']);

        }

        if ($this->app->bound('db.transactions')) {

            $connection->setTransactionManager($this->app['db.transactions']);

        }

        // Here we'll set a reconnector callback. This reconnector can be any callable

        // so we will set a Closure to reconnect from this manager with the name of

        // the connection, which will allow us to reconnect from the connections.

        $connection->setReconnector($this->reconnector);

        $this->registerConfiguredDoctrineTypes($connection);

        return $connection;

    }

    /**

     * Prepare the read / write mode for database connection instance.

     *

     * @param  \Illuminate\Database\Connection  $connection

     * @param  string|null  $type

     * @return \Illuminate\Database\Connection

     */

    protected function setPdoForType(Connection $connection, $type = null)

    {

        if ($type === 'read') {

            $connection->setPdo($connection->getReadPdo());

        } elseif ($type === 'write') {

            $connection->setReadPdo($connection->getPdo());

        }

        return $connection;

    }

    /**

     * Register custom Doctrine types with the connection.

     *

     * @param  \Illuminate\Database\Connection  $connection

     * @return void

     */

    protected function registerConfiguredDoctrineTypes(Connection $connection): void

    {

        foreach ($this->app['config']->get('database.dbal.types', []) as $name => $class) {

            $this->registerDoctrineType($class, $name, $name);

        }

        foreach ($this->doctrineTypes as $name => [$type, $class]) {

            $connection->registerDoctrineType($class, $name, $type);

        }

    }

    /**

     * Register a custom Doctrine type.

     *

     * @param  string  $class

     * @param  string  $name

     * @param  string  $type

     * @return void

     *

     * @throws \Doctrine\DBAL\DBALException

     * @throws \RuntimeException

     */

    public function registerDoctrineType(string $class, string $name, string $type): void

    {

        if (! class_exists('Doctrine\DBAL\Connection')) {

            throw new RuntimeException(

                'Registering a custom Doctrine type requires Doctrine DBAL (doctrine/dbal).'

            );

        }

        if (! Type::hasType($name)) {

            Type::addType($name, $class);

        }

        $this->doctrineTypes[$name] = [$type, $class];

    }

    /**

     * Disconnect from the given database and remove from local cache.

     *

     * @param  string|null  $name

     * @return void

     */

    public function purge($name = null)

    {

        $name = $name ?: $this->getDefaultConnection();

        $this->disconnect($name);

        unset($this->connections[$name]);

    }

    /**

     * Disconnect from the given database.

     *

     * @param  string|null  $name

     * @return void

     */

    public function disconnect($name = null)

    {

        if (isset($this->connections[$name = $name ?: $this->getDefaultConnection()])) {

            $this->connections[$name]->disconnect();

        }

    }

    /**

     * Reconnect to the given database.

     *

     * @param  string|null  $name

     * @return \Illuminate\Database\Connection

     */

    public function reconnect($name = null)

    {

        $this->disconnect($name = $name ?: $this->getDefaultConnection());

        if (! isset($this->connections[$name])) {

            return $this->connection($name);

        }

        return $this->refreshPdoConnections($name);

    }

    /**

     * Set the default database connection for the callback execution.

     *

     * @param  string  $name

     * @param  callable  $callback

     * @return mixed

     */

    public function usingConnection($name, callable $callback)

    {

        $previousName = $this->getDefaultConnection();

        $this->setDefaultConnection($name);

        return tap($callback(), function () use ($previousName) {

            $this->setDefaultConnection($previousName);

        });

    }

    /**

     * Refresh the PDO connections on a given connection.

     *

     * @param  string  $name

     * @return \Illuminate\Database\Connection

     */

    protected function refreshPdoConnections($name)

    {

        [$database, $type] = $this->parseConnectionName($name);

        $fresh = $this->configure(

            $this->makeConnection($database), $type

        );

        return $this->connections[$name]

                    ->setPdo($fresh->getRawPdo())

                    ->setReadPdo($fresh->getRawReadPdo());

    }

    /**

     * Get the default connection name.

     *

     * @return string

     */

    public function getDefaultConnection()

    {

        return $this->app['config']['database.default'];

    }

    /**

     * Set the default connection name.

     *

     * @param  string  $name

     * @return void

     */

    public function setDefaultConnection($name)

    {

        $this->app['config']['database.default'] = $name;

    }

    /**

     * Get all of the support drivers.

     *

     * @return string[]

     */

    public function supportedDrivers()

    {

        return ['mysql', 'pgsql', 'sqlite', 'sqlsrv'];

    }

    /**

     * Get all of the drivers that are actually available.

     *

     * @return string[]

     */

    public function availableDrivers()

    {

        return array_intersect(

            $this->supportedDrivers(),

            str_replace('dblib', 'sqlsrv', PDO::getAvailableDrivers())

        );

    }

    /**

     * Register an extension connection resolver.

     *

     * @param  string  $name

     * @param  callable  $resolver

     * @return void

     */

    public function extend($name, callable $resolver)

    {

        $this->extensions[$name] = $resolver;

    }

    /**

     * Remove an extension connection resolver.

     *

     * @param  string  $name

     * @return void

     */

    public function forgetExtension($name)

    {

        unset($this->extensions[$name]);

    }

    /**

     * Return all of the created connections.

     *

     * @return array<string, \Illuminate\Database\Connection>

     */

    public function getConnections()

    {

        return $this->connections;

    }

    /**

     * Set the database reconnector callback.

     *

     * @param  callable  $reconnector

     * @return void

     */

    public function setReconnector(callable $reconnector)

    {

        $this->reconnector = $reconnector;

    }

    /**

     * Set the application instance used by the manager.

     *

     * @param  \Illuminate\Contracts\Foundation\Application  $app

     * @return $this

     */

    public function setApplication($app)

    {

        $this->app = $app;

        return $this;

    }

    /**

     * Dynamically pass methods to the default connection.

     *

     * @param  string  $method

     * @param  array  $parameters

     * @return mixed

     */

    public function __call($method, $parameters)

    {

        if (static::hasMacro($method)) {

            return $this->macroCall($method, $parameters);

        }

        return $this->connection()->$method(...$parameters);

    }

}